Chelsea Flower Show preview

The Chelsea Flower Show run by the Royal Horticultural Society celebrates its 100th birthday this year
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Gnomes sit on a stand at the Chelsea Flower Show on May 20, 2013 in London, England. The Royal Horticultural Society (RHS) has lifted a ban on gnomes for this year only. The gnomes will be auctioned off as part of the 'Chelsea Centenary Appeal', and to raise funds for the RHS Campaign of School Gardening. The Chelsea Flower Show run by the RHS celebrates its 100th birthday this year. (Getty Images)
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Joanna Lumley poses during a photo call at the Chelsea Flower Show on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS celebrates its 100th birthday this year. (Getty Images)
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Cacti are displayed on the 'Southfield Nursery' stand on the press day at Chelsea Flower Show on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS celebrates its 100th birthday this year. (Getty Images)
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A visitor photographs flowers on a stand at the Chelsea Flower Show on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS, (Royal Horticultural Society) celebrates its 100th birthday this year. (Getty Images)
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Visitor Sue Brown looks at a stand at the Chelsea Flower Show on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS, (Royal Horticultural Society) celebrates its 100th birthday this year. (Getty Images)
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Decorated Gnomes designed by celebrity figures (L-R) Alan Titchmarsh, Elton John, Julian Fellowes and Lily Allen are displayed at Chelsea Flower Show on May 20, 2013 in London, England. The Royal Horticultural Society (RHS) has lifted a ban on gnomes for this year only and will be auctioned off as part of the 'Chelsea Centenary Appeal', and to raise funds for the RHS Campaign of School Gardening. The Chelsea Flower Show run by the RHS celebrates its 100th birthday this year. (Getty Images)
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A Chelsea Pensioner walks around the stands at the Chelsea Flower Show on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS, (Royal Horticultural Society) celebrates its 100th birthday this year. (Getty Images)
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British artist Marc Quinn poses with his sculpture of an orchid in the Royal Horticultural Society (RHS) garden during the Chelsea Flower Show press day on May 20, 2013 in London, England. The Chelsea Flower Show run by the RHS, (Royal Horticultural Society) celebrates its 100th birthday this year. (Getty Images)